20. f3g2  20... e5d7 The knight returns before White plays f2-f4. 21. a3c2 Attacking the pawn on d4. White also has another idea, which will be seen in the next move. 21... d8b6  22. b2b4 An excellent prophylactic move, preventing Black's knight from going to c5. White's position has improved, and he now has the typical microadvantage that is promised by the Two Knights Variation of the Caro-Kann.